Often carried without harm; infections can become serious. Explore its illustrative 3D model, human context, and sources.
S. aureus is commonly carried on human skin and in the nose without causing harm. It can also cause skin infections and invasive disease. MRSA is a resistant subset of S. aureus; this species entry does not imply that every strain is MRSA.
Infections can involve the bloodstream, lungs, bones, or heart valves. Severity depends on the infection site and the person's health; carriage alone is not an infection.
Original procedural spherical cocci shown in a representative cluster, with Gram-positive peptidoglycan, plasma membranes, symbolic nucleoids and 70S ribosomes. The number and arrangement of cells are illustrative. The single-cell replication sequence uses one coccus from this model, not a TB rod; changes in division plane and cluster formation are not reconstructed. No flagella, endospore, Gram-negative outer membrane or capsule is assigned in this phenotype. PHAC organism characteristics and Foster’s structure chapter support the base phenotype. Colours, sizes, molecules and layer spacing are schematic. Independent scientific review pending. The generation-time card uses a separate, condition-specific laboratory reference; the 3D phenotype and animation substages are illustrative, not measured growth dynamics of that strain.
Source check: 2026-09-19. Educational content; independent scientific review remains pending.